All categories

3 years ago

Suppose 1/4 of students in your school

Mathematics

1 answer:

DedPeter [7]3 years ago

5 0

Answer: 60 students i think

You might be interested in

A scented candle is in the shape of a cylinder that is 8 inches tall. The diameter of the candle is 3.5 inches. Find the volume

blagie [28]

To find volume you use V=πr2h
V=3.14x1.75x2x8
answer: 76.97

5 0

3 years ago

Finding volume of a rectangular prism

torisob [31]

Answer:

uhh.... you are missing some part of your question

Step-by-step explanation:

6 0

3 years ago

Which of these numbers is a rational number?

Ymorist [56]

Answer:

the answer is A and C

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Rewrite equation -qx+p=r

hodyreva [135]

Answer:-qx+p=r

Step-by-step explanation:

8 0

3 years ago

The water diet requires you to drink two cups of water every half hour from the time you get up until you go to bed, but otherwi

Elan Coil [88]

Answer:

$7-3.182 \frac{13.638}{\sqrt{4}}= -14.698$

$7+3.182 \frac{13.638}{\sqrt{4}}= 28.698$

Step-by-step explanation:

For this case we have the following info given:

Weight before diet 180 125 240 150

Weight after diet 170 130 215 152

We define the random variable $D = before-after$ and we can calculate the inidividual values:

D: 10, -5, 25, -2

And we can calculate the mean with this formula:

$\bar X= \frac{\sum_{i=1}^n X_i}{n}$

And the deviation with:

$s= \sqrt{\frac{\sum_{i=1}^n (X_i- \bar X)^2}{n-1}}$

And after replace we got:

$\bar D= 7, s_d = 13.638$

And the confidence interval for this case would be given by:

$\bar D \pm t_{\alpha/2} \frac{s_d}{\sqrt{n}}$

The degrees of freedom are given by:

$df = n-1= 4-1=3$

For the 95% of confidence the value for the significance is $\alpha=0.05$ and the critical value would be $t_{\alpha/2}= 3.182$ . And replacing we got:

$7-3.182 \frac{13.638}{\sqrt{4}}= -14.698$

$7+3.182 \frac{13.638}{\sqrt{4}}= 28.698$

6 0

3 years ago